Equal beta and high gamma weights raised mean smaller band retention over gamma maps at the same output count in 33 SEEG patients
We tested one fixed spatial map for beta and high gamma in public SEEG data from 33 patients with epilepsy. The study used 354 blocks of eight consecutive contacts and two 60-second interictal files per patient. A gamma fit selected the smallest output count that kept 90 percent training gamma energy. A second map used that same count and equal weights for the two normalized training covariances. On the separate test file, mean smaller band retention rose from 89.84 to 90.55 percent. The paired patient mean gain was 0.71 percentage points, with a 95 percent patient bootstrap interval of 0.28 to 1.21 points. Beta retention rose by 2.15 points and gamma retention fell by 0.61 points. Ten patient means and 200 of 354 blocks lost smaller band retention. The raw covariance sum performed worse than the gamma fit. The mean gain stayed positive in the specified sensitivity checks. Four fresh source records passed covariance reconstruction checks. A separate replay reproduced all saved analysis values exactly. The package contains code, compact inputs, maps, four figures, provenance, and repeat instructions. The file time gap is unknown. Band energy does not establish task information, device savings, or brain-writing benefit.
stereoelectroencephalography · SEEG · beta · high gamma · spatial maps · signal retention · brain-computer interface
References
5- usesMaps fitted to one SEEG record retained 91.9 percent mean gamma energy in another record after common mean removal in 33 patients sci:sha256:a90047a9e0f63452422c9b91fccbb2d5d08e04935ba4ebc4a8e904f9ddf75e0e
We used its contact covariance files, block rule, source metadata, and EDF check code. Its gamma fit supplied the baseline at the same output count.
- usesGeometry normalization left mean gamma voltage dimension below half the contrast count in 33 SEEG patients over two 60-second records sci:sha256:dcc673502009bf8ee2276c0af32ff129391eb608abaa71b77ea7b08b6af4298e
Its compact contact covariance files and source records underlie the imported inputs. We repeated the 508 file hash checks inherited from this work.
- usesLinks with a shared contact had a larger share of strong local gamma correlations over 60 seconds in 33 SEEG patients sci:sha256:77fdc837b559f7b809e6d187400a439fa1d2e22314b585079cbb13cc1ef1b002
Its public EDF extraction supplied the source band covariances and receipts with fixed versions. We preserved a source retrieval and rebuild recipe and checked four source records.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
Source dataset used for the SEEG records and covariance inputs, version 1.1.3.
- doi:10.3389/fnins.2023.1283491
Cited by
4 publicationsPublic catalog entries on Sciscape.
- usesMaps fitted to protect the smaller beta or high gamma fraction raised mean test retention at the same output count in 33 SEEG patients
We used the unchanged contact covariance archives, source metadata, eight-contact selection rule, selection code, raw source check code, and baseline results. We reproduced its gamma and equal weight block scores on the same inputs, then tested a map fitted to protect the smaller band fraction at the same output count. This is a reused cohort, not an independent replication.
- usesEqual epoch weights did not show a clear lower-tail high gamma gain at matched output counts and a 90 percent training target in 33 SEEG patients
This study used the 354-block selection, channel metadata, raw source receipts, mean covariance, baseline scores, and EDF header parser. It rebuilt the public source prefixes and added a matched-output-count test of epoch weighting on separate files.
- usesPCA fit to scaled pairs reduced mean local high gamma reconstruction error at equal output counts in 33 SEEG patients
This study used the 72 contact covariance archives, frozen source metadata, cohort selection code, raw-prefix check code, and baseline block results. It tested mean local adjacent-pair reconstruction error at the same output count. It reproduced the inherited contact gamma ranks and retention before comparison. This is a dependent analysis of the same cohort.
- usesOutput phase controls rejected 90.95 percent of shared contact beta tests under independent contact phases from the first two seconds of SEEG in 33 patients
Used pinned source metadata, EDF headers, object versions, and raw audit inputs to retrieve new four-second signal ranges.